123todo.com

What It Is

123 ToDo is a browser-based task management PWA positioned as “simple, powerful, and privacy-first.” It does not require account registration, does not use cookies, and does not perform analytics tracking. Task data is stored in the browser’s localStorage/IndexedDB, with an emphasis on “data never leaving your device.” From an enterprise software perspective, it is more of a personal productivity tool than a full-fledged team collaboration SaaS.

Core Features and Experience

The product is built around a four-level priority system: Must Do, Should Do, Could Do, and On Hold. It supports quick task creation, drag-and-drop ordering within the same priority level, completion checkboxes, and milestone encouragement for completing 5/10/15 tasks per day. It can be installed as a PWA and provides offline capability through Service Workers. It also requests persistent storage to reduce the chance of the operating system clearing task data. Shadow Backups provide local daily snapshots as auxiliary recovery points, but the official guidance still clearly reminds users to export their own backups.

Pricing, Integrations, and Collaboration

Pricing is extremely straightforward: completely free, with no subscription, premium tier, paywall, or trial restrictions. For third-party integrations, the available text only mentions CSV import for Todoist projects and tasks; common integrations such as calendars, Slack, Google Workspace, and Microsoft 365 were not found. Team collaboration and permissions are essentially absent: there are no shared tasks, organization workspaces, role-based permissions, approvals, or admin controls, so it is not suitable for multi-member project management.

Security, Deployment, and Developer Support

Privacy is the main selling point: no accounts, no server-side task storage, and no tracking. However, this also creates clear limitations: device damage, clearing browser data, or uninstalling the browser may all result in task loss, and the official statement says recovery is not possible. No information was found regarding compliance certifications such as SOC 2, ISO 27001, or GDPR. The deployment model is an online website plus a local PWA, with no mention of self-hosting. In terms of developer support, no public API, Webhook, or SDK is provided.

Pros, Cons, and Who It’s For

Its strengths are that it is free, lightweight, offline-capable, privacy-friendly, and extremely easy to learn. Its weaknesses are the lack of cloud sync, collaboration, enterprise compliance, and guaranteed service support. It is suitable for individual users, privacy-conscious users, and people who want to get away from complex productivity systems. It is not suitable for enterprise project management, strong cross-device synchronization, team task workflows, or organizations that require auditability and compliance.

Access from China

The crawled text does not provide information on access from mainland China, payments, or localization, so its access status is unknown. Since no payment is required, payment barriers should be minimal. If you need a Chinese-language ecosystem, sync, and team features, alternatives such as 滴答清单, Microsoft To Do, Todoist, Trello, Notion, or Asana may be worth considering.